Outcome Independence of Entanglement in One-Way Computation

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概要

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• We show that, in the standard scheme of one-way computation where the quantum circuit consists of controlled-NOT gates and rotation gates, all intermediate states appearing in the process at a given step of measurement are equivalent modulo local unitary transformations. This implies, in particular, that all those intermediate states share the same entanglement irrespective of the measurement outcomes, indicating that the process of one-way computation is essentially unique with respect to local quantum operations.

• 2012-06-15

著者

• SASAKI Toshihiko

  Department of Material Science and Engineering, Kanazawa University

• Tsutsui Izumi

  Theory Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan

• ICHIKAWA Tsubasa

  Research Center for Quantum Computing, Interdisciplinary Graduate School of Science and Engineering, Kinki University, Higashiosaka, Osaka 577-8502, Japan

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